I'll address this since it hit the second page with no feedback, but I'll say now that I felt that this needed a lot of trimming.

Your formatting's off (Missing Item # section, rating module, etc.). Check the How to Write an SCP Guide for a standard article template.

Try to avoid using scare quotes. In-universe, it's a professional scientist with experience in the field writing the thing; they would know the correct terminology to use without needing to 'borrow' words

Please properly space the paragraphs in containment.

The first sentence of the description was confusing. A non-corporeal source of what? Why is the SCP object the alleged source, rather than the contained phenomenon? How was this thing even discovered and contained?

Keep in mind that as the author, you know the entire story, but the Foundation needs to have discovered what it knows about the SCP through observation and experimentation. How would someone with no prior knowledge whatsoever of the object, using only experimentation and observation, be able to figure out all the information you've got in the article?

Capitalize Class-D when using it as a title.

I got bored midway into reading the "passive phase" section. Perhaps consider better-establishing what the thing is before diving straight into the details? You as the author know what's going on, but the reader only has what's on the page, and when someone is going into a piece totally blind, they don't know what information is important and what information isn't totally relevant to understanding the basics of the SCP object.

If you really want to work with this (I personally see a lot of creepy, dangerous, etc. drafts a week, so I'm naturally hesitant on the approach when not a lot of them work out), I'd suggest making the description more accessible in the beginning. Give a brief overview of what the phenomenon actually is in the first paragraph, mention the two "phases" (which seem kind of corny to me, admittedly. Why not just describe them as behaviors?) and maybe stick the calming protocol in an addendum and mention it in containment.